JAX P3 - Pitch Shifter III 4+

Audio Unit (AUv3‪)‬

Jens Guell

    • 3.0 • 2 Ratings
    • $9.99

Screenshots

Description

The (frequency domain) pitch shifter effect (Audio Unit) from our JAX ESSENTIAL SERIES allows to re-pitch audio in realtime, based on semitones and cents of a semitone.

Our frequency domain approach for pitch shifting will use the “phase vocoder” method, that effectively is an FFT/inverse FFT. The term “vocoder” is somewhat misleading here, because it has nothing to do with a real “vocoder”.

FFT will introduce latency too, but the buffers can be kept relatively small and the input can be shifted by exactly this fixed amount of latency for the final mix internally.

Complex mathematical formulas will be used to extract the frequency components from the signal and their corresponding magnitudes. After the frequency is known, it can be modified in controlled manner, thus making pitch and frequency shifting possible in realtime.

If the frequency was modified across all magnitudes equally, the inverse FFT is applied, leaving the audio with a changed pitch. Like the time domain approach of JAX ESSENTIAL SERIES P2, this will produce “chipmonkeyfication” effects, because all transients and formants will be shifted this way too, proportional with the fundamental frequency.

The frequency domain approach has some side effects too. The audio will be smeared slightly but equally across the entire range. Grainy results are less audible than with the time domain approach. It is not well situated for using with strong transient audio material. Excellent results can be achieved with ambient audio material.

Ratings and Reviews

3.0 out of 5
2 Ratings

2 Ratings

Aladdin Wannabe ,

The Pitch Shifter I’ve been looking for!!

This app is so easy to use to change the key of an audio file or detune it. Seems to be the only app on ios that can do that smoothly. The other auv3’s for pitch shifting seems to be aimed towards the ones who want to just create a chorus like effect or auto tune singing.

I love this app and it took me so long to find it, but please add the feature of typing in the exact number value of the detune.

App Privacy

The developer, Jens Guell, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

Supports

  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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